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- W4280498577 abstract "We report the discovery of a highly eccentric long-period Jovian planet orbiting the hot-Jupiter host HD,83443. By combining radial velocity data from four instruments (AAT/UCLES, Keck/HIRES, HARPS, Minerva-Australis) spanning more than two decades, we find evidence for a planet with m~sin~$i=1.35^{+0.07}_{-0.06}$,mj, moving on an orbit with $a=8.0pm$0.8,au and eccentricity $e=0.76pm$0.05. We combine our radial velocity analysis with textit{Gaia} eDR3 /textit{Hipparcos} proper motion anomalies and derive a dynamical mass of $1.5^{+0.5}_{-0.2} M_{rm Jup}$. We perform a detailed dynamical simulation that reveals locations of stability within the system that may harbor additional planets, including stable regions within the habitable zone of the host star. HD,83443 is a rare example of a system hosting a hot Jupiter and an exterior planetary companion. The high eccentricity of HD,83443c suggests that a scattering event may have sent the hot Jupiter to its close orbit while leaving the outer planet on a wide and eccentric path." @default.
- W4280498577 created "2022-05-22" @default.
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- W4280498577 date "2022-05-17" @default.
- W4280498577 modified "2023-10-16" @default.
- W4280498577 title "HD 83443c: A Highly Eccentric Giant Planet on a 22 yr Orbit" @default.
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